<template>
    <div>
        <h2>{{id ? '编辑':'新建'}}文章</h2>
        <el-form label-width="120px" @submit.native.prevent="save">
            <el-form-item label='所属分类'>
                <el-select v-model="model.categories" multiple>
                    <el-option v-for="item in categories" :key="item._id"
                     :label="item.name" :value="item._id"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item label='标题'>
                <el-input v-model="model.title"></el-input>
            </el-form-item>
            <el-form-item label='内容'>
                <vue-editor useCustomImageHandler @imageAdded="handleImageAdded" v-model="model.body"></vue-editor>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" native-type="submit">保存</el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
import {VueEditor} from 'vue2-editor'
export default {
    props:{
        id:{}
    },
    data (){
        return{
            model:{},
            categories:[],
        }
    },
    components:{
        VueEditor
    },
    methods: {
        async handleImageAdded(file, Editor, cursorLocation, resetUploader) {
            const formData = new FormData();
            formData.append("file", file);

            const res = await this.$http.post('upload', formData)
            Editor.insertEmbed(cursorLocation, "image", res.data.url);
            resetUploader();
        },
        async save() {
            let res
            if (this.id){
                res = await this.$http.put(`/rest/articles/${this.id}`,this.model)
            }else{
                res = await this.$http.post('/rest/articles',this.model)
            }
            this.$router.push('/articles/list')
            this.$message({
                type:'success',
                message:'保存成功'
            })
        },
        async fetch() {
            const res = await this.$http.get(`/rest/articles/${this.id}`)
            this.model = res.data
        },
        async fetchCategories() {
            const res = await this.$http.get(`/rest/categories`)
            this.categories = res.data
        }
    },
    created(){
        this.fetchCategories()
        this.id&&this.fetch()
    }
}
</script>

